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Rub_0201
Registered: Apr 2019
Posts: 28 |
How to mute the voices of the SID?
Hi!
I want to remix my favorite SID tunes. A lot of them have nice rhythm, ideas and melody, but if I hear them more then 10 times in a loop, I get dizzy.
I want to bring more stillness and a different temper in them - making a remix.
My idea is to mute one or two of the voices of the SID and additionally fiddle around with some registers.
I did that with emulators like the C64debugger("24Hours Demo Remix" on YT) and the result is quite nice. Now I want to do it on the C64 itself.
As I am no SID programmer or musician, I have no clue how to do it on the real machine.
I understand fundamental assembly coding, but I am far from doing fancy stuff.
So I need your help! |
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Bansai
Registered: Feb 2023
Posts: 54 |
Quote: Banzai,
DeepSID is amazing. Did not know about it.
Checked a lot of buttons - did not find a scope view though.
The unwanted clicks are gone now! Went to more SIDs and Rob Hubbard plays great - project is going well :-)
JCH and others did a great job with that site.
There should be a tab for the scope
News / Tags / Scope / Filter / Stereo
It's not available for all players, but it should work for the regular WebSid one (not legacy).
Volume is also shown if you scroll down once waves are up, so for the usual $D418 digis, you can see them as well. |
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Rub_0201
Registered: Apr 2019
Posts: 28 |
Thanks bansai. Found the buttons. They're on the left. |
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Rub_0201
Registered: Apr 2019
Posts: 28 |
After a lot of coding, testing and debugging, it is time to go live!
I released the first demo using muting and manipulation of two sid chips.
All actions are recorded during a live session.
The recording is played back and gives the demo.
LIVE |
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Mixer
Registered: Apr 2008
Posts: 460 |
Do mashups of sid tunes. |
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Rub_0201
Registered: Apr 2019
Posts: 28 |
This first one just takes one Sid tune. So I call this a remix.
SID Mashup needs at least two of them. The next step!
I can do this by extracting „samples“ from one song and play them vs another song.
Would be nice to have BPM in HVSC to find matching songs. |
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Mixer
Registered: Apr 2008
Posts: 460 |
I'd just make the player run on timers so that you can change the call rate for each sidtune. This way you can choose your speed for each tune. Many will sound wrong, but hey, it'll be interesting and different. :) |
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Rub_0201
Registered: Apr 2019
Posts: 28 |
Uuuh, never used timer.
From the CIAs, right?
Can I set a timer and let this trigger an interrupt?
I think this is a great feature to add! |
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Sensorium
Registered: Feb 2025
Posts: 2 |
Funny, I just added SID voice muting and fine speed control to the SID player on the TeensyROM, then someone pointed me to this thread. Source code is in the GitHub if you're interested, here's a demo vid:
https://www.youtube.com/watch?v=LmxIaZ5aKT8
Thanks! :) |
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Rub_0201
Registered: Apr 2019
Posts: 28 |
Thanks for your Github.
Speedcontrol is a nice addon, but I think this will make it very difficult to have CPU intensive graphic effects. |
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Sensorium
Registered: Feb 2025
Posts: 2 |
That depends on how intense the graphics are (% of CPU usage) and how fast you allow the SID to speed up. Since it's still interrupt based, you could notice a slight slow down of high CPU usage programs. |
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